X-Git-Url: https://git.cinelerra-gg.org/git/?p=goodguy%2Fcinelerra.git;a=blobdiff_plain;f=cinelerra-5.1%2Fplugins%2Falpha%2Falpha.C;fp=cinelerra-5.1%2Fplugins%2Falpha%2Falpha.C;h=87f141e913de71470557e38bff5b187150184402;hp=0000000000000000000000000000000000000000;hb=04293346a5ef49683cfa6ca3a98ef6cbfcdf7732;hpb=033efab12586e8086014c814a5360f211d228ac3

diff --git a/cinelerra-5.1/plugins/alpha/alpha.C b/cinelerra-5.1/plugins/alpha/alpha.C
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+++ b/cinelerra-5.1/plugins/alpha/alpha.C
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+
+/*
+ * CINELERRA
+ * Copyright (C) 2008-2019 Adam Williams <broadcast at earthling dot net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <math.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "alpha.h"
+#include "filexml.h"
+#include "keyframe.h"
+#include "language.h"
+#include "vframe.h"
+
+REGISTER_PLUGIN(AlphaMain)
+
+
+AlphaConfig::AlphaConfig()
+{
+	a = 1.;
+}
+
+int AlphaConfig::equivalent(AlphaConfig &that)
+{
+	return a == that.a;
+}
+
+void AlphaConfig::copy_from(AlphaConfig &that)
+{
+	a = that.a;
+}
+
+void AlphaConfig::interpolate(AlphaConfig &prev, AlphaConfig &next,
+		long prev_frame, long next_frame, long current_frame)
+{
+	double next_scale = (double)(current_frame - prev_frame) / (next_frame - prev_frame);
+	double prev_scale = (double)(next_frame - current_frame) / (next_frame - prev_frame);
+
+	a = (prev.a * prev_scale + next.a * next_scale);
+}
+
+
+AlphaSlider::AlphaSlider(AlphaWindow *window, AlphaMain *plugin,
+		int x, int y, int w)
+ : BC_FSlider(x, y, 0, w, w, 0.f, 1.f, plugin->config.a)
+{
+	this->window = window;
+	this->plugin = plugin;
+	set_precision(0.001);
+}
+AlphaSlider::~AlphaSlider()
+{
+}
+
+int AlphaSlider::handle_event()
+{
+	plugin->config.a = get_value();
+	plugin->send_configure_change();
+	return 1;
+}
+
+#define ALPHA_W xS(400)
+#define ALPHA_H yS(60)
+
+AlphaWindow::AlphaWindow(AlphaMain *plugin)
+ : PluginClientWindow(plugin, ALPHA_W, ALPHA_H, ALPHA_W, ALPHA_H, 0)
+{
+	this->plugin = plugin;
+}
+
+AlphaWindow::~AlphaWindow()
+{
+}
+
+void AlphaWindow::create_objects()
+{
+	int x = xS(10), y = yS(10);
+	BC_Title *title;
+	add_subwindow(title = new BC_Title(x, y, _("Alpha:")));
+	y += title->get_h() + yS(5);
+	add_subwindow(alpha_slider = new AlphaSlider(this, plugin, x, y, xS(380)));
+	show_window();
+}
+
+void AlphaWindow::update()
+{
+	float alpha = plugin->config.a;
+	alpha_slider->update(alpha);
+}
+
+
+AlphaMain::AlphaMain(PluginServer *server)
+ : PluginVClient(server)
+{
+}
+
+AlphaMain::~AlphaMain()
+{
+}
+
+const char* AlphaMain::plugin_title() { return N_("Alpha"); }
+int AlphaMain::is_realtime() { return 1; }
+
+NEW_WINDOW_MACRO(AlphaMain, AlphaWindow)
+
+LOAD_CONFIGURATION_MACRO(AlphaMain, AlphaConfig)
+
+int AlphaMain::is_synthesis()
+{
+	return 1;
+}
+
+
+int AlphaMain::process_buffer(VFrame *frame,
+	int64_t start_position,
+	double frame_rate)
+{
+	load_configuration();
+
+	int color_model = frame->get_color_model();
+	int need_alpha = BC_CModels::has_alpha(color_model);
+	if( need_alpha ) {
+		read_frame(frame, 0, start_position,
+			frame_rate, get_use_opengl());
+	}
+	int w = frame->get_w();
+	int h = frame->get_h();
+
+
+#define MAIN_LOOP(type, components, is_yuv, max) do { \
+	if( components == 4 ) { \
+		for( int y=0; y<h; ++y ) { \
+			type *row = (type*)frame->get_rows()[y]; \
+			for( int x=0; x<w; ++x ) { \
+				row[3] = a * max; \
+				row += components; \
+			} \
+		} \
+	} \
+	else if( is_yuv ) { \
+		type ofs = (max+1)/2; \
+		for( int y=0; y<h; ++y ) { \
+			type *row = (type*)frame->get_rows()[y]; \
+			for( int x=0; x<w; ++x ) { \
+				row[0] = row[0] * a; \
+				row[1] = (row[1]-ofs) * a + ofs; \
+				row[2] = (row[2]-ofs) * a + ofs; \
+				row += components; \
+			} \
+		} \
+	} \
+	else {\
+		for( int y=0; y<h; ++y ) { \
+			type *row = (type*)frame->get_rows()[y]; \
+			for( int x=0; x<w; ++x ) { \
+				row[0] *= a; \
+				row[1] *= a; \
+				row[2] *= a; \
+				row += components; \
+			} \
+		} \
+	} \
+} while(0)
+
+	float a = config.a;
+	switch( frame->get_color_model() ) {
+	case BC_RGB888:     MAIN_LOOP(uint8_t, 3, 0, 0xff);  break;
+	case BC_RGB_FLOAT:  MAIN_LOOP(float,   3, 0, 1.0 );  break;
+	case BC_YUV888:     MAIN_LOOP(uint8_t, 3, 1, 0xff);  break;
+	case BC_RGBA8888:   MAIN_LOOP(uint8_t, 4, 0, 0xff);  break;
+	case BC_RGBA_FLOAT: MAIN_LOOP(float,   4, 0, 1.0 );  break;
+	case BC_YUVA8888:   MAIN_LOOP(uint8_t, 4, 1, 0xff);  break;
+	}
+
+	return 0;
+}
+
+
+void AlphaMain::update_gui()
+{
+	if( !thread ) return;
+	AlphaWindow *window = (AlphaWindow*)thread->window;
+	if( !window ) return;
+	if( !load_configuration() ) return;
+	window->lock_window("AlphaMain::update_gui");
+	window->update();
+	window->unlock_window();
+}
+
+
+void AlphaMain::save_data(KeyFrame *keyframe)
+{
+	FileXML output;
+	output.set_shared_output(keyframe->xbuf);
+	output.tag.set_title("ALPHA");
+	output.tag.set_property("A", config.a);
+	output.append_tag();
+	output.terminate_string();
+}
+
+void AlphaMain::read_data(KeyFrame *keyframe)
+{
+	FileXML input;
+	input.set_shared_input(keyframe->xbuf);
+
+	int result = 0;
+	while( !(result = input.read_tag()) ) {
+		if( input.tag.title_is("ALPHA") ) {
+			config.a = input.tag.get_property("A", config.a);
+		}
+	}
+}
+